package org.bouncycastle.asn1.pkcs;

import java.util.Enumeration;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;

/**
 * @deprecated - use AlgorithmIdentifier and PBES2Parameters
 */
public class PBES2Algorithms extends AlgorithmIdentifier implements
        PKCSObjectIdentifiers {
    private DERObjectIdentifier objectId;
    private KeyDerivationFunc func;
    private EncryptionScheme scheme;

    @SuppressWarnings("rawtypes")
    public PBES2Algorithms(ASN1Sequence obj) {
        super(obj);

        Enumeration e = obj.getObjects();

        objectId = (DERObjectIdentifier) e.nextElement();

        ASN1Sequence seq = (ASN1Sequence) e.nextElement();

        e = seq.getObjects();

        ASN1Sequence funcSeq = (ASN1Sequence) e.nextElement();

        if (funcSeq.getObjectAt(0).equals(id_PBKDF2)) {
            func = new KeyDerivationFunc(id_PBKDF2,
                    PBKDF2Params.getInstance(funcSeq.getObjectAt(1)));
        } else {
            func = new KeyDerivationFunc(funcSeq);
        }

        scheme = new EncryptionScheme((ASN1Sequence) e.nextElement());
    }

    public DERObjectIdentifier getObjectId() {
        return objectId;
    }

    public KeyDerivationFunc getKeyDerivationFunc() {
        return func;
    }

    public EncryptionScheme getEncryptionScheme() {
        return scheme;
    }

    public DERObject getDERObject() {
        ASN1EncodableVector v = new ASN1EncodableVector();
        ASN1EncodableVector subV = new ASN1EncodableVector();

        v.add(objectId);

        subV.add(func);
        subV.add(scheme);
        v.add(new DERSequence(subV));

        return new DERSequence(v);
    }
}
